What is the function of the EGR valve?

2 Answers
Archie
07/24/25 5:38pm
Introduction to the function of the automotive EGR valve: 1. It controls the amount of exhaust gas entering the intake manifold, allowing a certain amount of exhaust gas to flow into the intake manifold for recirculation. 2. It improves engine efficiency, enhances the combustion environment, reduces engine load, effectively decreases NOx compound emissions, minimizes knocking, and extends the service life of various components. 3. It can reduce the emission of nitrogen oxides (NOx) in the exhaust gas. Below is some related information about the automotive EGR: 1. Its full name is Exhaust-Gas-Recirculation, which is the exhaust gas recirculation system. 2. The EGR valve is a very important and critical component in the exhaust gas recirculation device. 3. The EGR valve (Exhaust Gas Recirculation valve) is a mechatronic product installed on diesel engines to control the amount of exhaust gas recirculated back to the intake system.
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JeremiahLynn
08/11/25 9:45am
Last time I had my car repaired, I encountered an issue with the EGR valve. Its full name is the Exhaust Gas Recirculation valve, which is mainly responsible for redirecting a portion of the exhaust gases back to the engine's intake. This helps lower the combustion chamber temperature and reduces emissions of harmful gases called nitrogen oxides. Its role is quite crucial, especially when driving in cities with strict environmental standards. Without it, the emissions test can easily fail, and fuel consumption may skyrocket. Previously, my car's check engine light came on, and after troubleshooting, it turned out the EGR valve was clogged with carbon deposits. After cleaning it, everything immediately returned to normal. During routine maintenance, it's essential to pay extra attention to prevent this part from getting stuck. When changing the oil, it's a good idea to check the pipes as well—if they're dirty, addressing the issue promptly can save a lot of hassle. A healthy car runs smoother and safer, and it's much more environmentally friendly.
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